EP1481783A2 - Verfahren zum erzeugen eines Spritzgussmateriales mit antibakteriellen Eigenschaften - Google Patents

Verfahren zum erzeugen eines Spritzgussmateriales mit antibakteriellen Eigenschaften Download PDF

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Publication number
EP1481783A2
EP1481783A2 EP03015896A EP03015896A EP1481783A2 EP 1481783 A2 EP1481783 A2 EP 1481783A2 EP 03015896 A EP03015896 A EP 03015896A EP 03015896 A EP03015896 A EP 03015896A EP 1481783 A2 EP1481783 A2 EP 1481783A2
Authority
EP
European Patent Office
Prior art keywords
injection
nanosilver particles
pigment
plastic raw
molded material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03015896A
Other languages
English (en)
French (fr)
Other versions
EP1481783A3 (de
Inventor
Soo Kim Daewoo Electronics Corporation Jin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WiniaDaewoo Co Ltd
Original Assignee
Daewoo Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daewoo Electronics Co Ltd filed Critical Daewoo Electronics Co Ltd
Publication of EP1481783A2 publication Critical patent/EP1481783A2/de
Publication of EP1481783A3 publication Critical patent/EP1481783A3/de
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/16—Auxiliary treatment of granules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/12—Making granules characterised by structure or composition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
    • B29K2105/0011—Biocides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites

Definitions

  • the present invention relates to a method for producing an injection-molded material with an antibacterial function; and, more particularly, to an injection molding method capable of preventing a discoloration and/or a decrease in strength of the injection-molded material.
  • silver is well-known as a common antibacterial agent.
  • colloidal silver is known as being safe and effective against bacteria, fungi, microbes, virus and the like.
  • silver ions When silver ions are absorbed into cells of virus, bacteria, fungi and the like, the silver ions prevent the operation of enzyme required in respiration thereof to render them dead. Further, silver ions prevent metabolism of the bacteria and suppress reproduction thereof.
  • Fine particles of silver can be produced by a physical process such as electrolysis, liquid phase reduction, and grinding.
  • the electrolysis has mainly been used hitherto in order to obtain stabilized nanosilver particles with a high purity.
  • pure silver (99.99%) is immersed into distilled water; and extremely fine particulates of silver are obtained by applying a low current at a low temperature.
  • a refrigerator serves to preserve food in a fresh state for an extended period of time in a food storage compartment by cooling air in the compartment using a refrigeration cycle.
  • refrigerant gas compressed under a high temperature and a high pressure by a compressor is condensed into liquid phase in a condenser; and the liquid is then pressure-reduced through an expansion valve and evaporated in an evaporator.
  • the evaporating refrigerant takes heat from the ambient air to cool it.
  • the cooled air is then forced into the food storage compartment by, e.g., a fan.
  • nanosilver particles in the refrigerator have been conducted so as to provide the refrigerator with an antibacterial function.
  • a finished material constituting any part of the refrigerator where there may be a generation and growth of bacteria such as an interior finished material constituting a food storage compartment of the refrigerator, a storage vessel, a pocket and a part constituting an air circulation duct, the finished material comes with the antibacterial function.
  • raw materials master batches
  • a transparent plastic resin e.g., GPPS
  • the mixture is heated and melted at a temperature of 220 ⁇ 250°C and then cooled into a solid state.
  • the solid mixture is cut to form pellets of a fine particle size.
  • the pellets are inserted into an injection molding machine and injected in a molten state at a temperature of 180 ⁇ 250°C to form a finish material.
  • a primary object of the present invention to provide an improved method for producing an injection-molded material with an antibacterial function wherein a desired color of a finish material is stably obtained without the above-mentioned problems.
  • a method for producing an injection-molded material with an antibacterial function including the steps of: coating nanosilver particles and pigment onto surfaces of plastic raw materials to make pellets of the mixture; and inserting the mixture pellets into an injection molding machine to form an injection-molded material.
  • a cohesive agent may be mixed with a solution of the nanosilver particles and the pigment prior to the step of coating the nanosilver particles and the pigment onto the surfaces of the plastic raw materials.
  • the step of coating the nanosilver particles and the pigment onto the surfaces of the plastic raw material includes spraying the nanosilver particles and the pigment onto the surfaces of the plastic raw materials or immersing the plastic raw material into a solution of the nanosilver particles and the pigment.
  • the drawing is a flowchart showing a process for forming an injection-molded material in accordance with a preferred embodiment of the present invention.
  • the drawing is a flowchart showing the steps of a process for producing an injection-molded material in accordance with the present invention.
  • the causes of discoloration of the injection-molded material are the heat (e.g., 220 ⁇ 250°C) applied during the procedure in which a transparent plastic resin, nanosilver particles and pigment are mixed and melted, and the heat (e.g., 180 ⁇ 250°C) applied to the pellets of the mixture at the final injection molding procedure.
  • the heat e.g., 220 ⁇ 250°C
  • the heat e.g. 180 ⁇ 250°C
  • nanosilver particles and pigment are coated onto surfaces of raw materials of, e.g., a transparent plastic resin to form pellets of the mixture with the nanosilver particles and the pigment coated on the surfaces of the plastic raw materials.
  • the mixture pellets are then inserted in an injection molding machine and injected in a molten state to form a finished material.
  • a cohesive agent may be added to the nanosilver solution (colloidal silver) and the pigment in order to enhance the cohesion of the nanosilver particles and the pigment to the plastic raw material. In this way, a more stabilized mixture can be obtained.
  • the method of the present invention employs the step of coating the nanosilver particles and the pigment onto the surfaces of the plastic raw materials instead of the conventional step of mixing and heating the transparent plastic resin, the nanosilver particles and the pigment, thereby eliminating the heat-treatment procedure.
  • one heat-treatment step is removed compared with the prior art method; and, therefore, a test result does not show a discoloration, a decrease in strength and an increase in brittleness of the injection-molded material produced by the injection molding process of the present invention.
  • the step of coating the nanosilver particles and the pigment onto the surfaces of the plastic raw materials includes spraying the mixture of the nanosilver particles and the pigment onto the surfaces of the plastic raw material or immersing the plastic raw materials into the solution of the nanosilver particles and the pigment, but not limited thereto.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
EP03015896A 2003-05-31 2003-07-11 Verfahren zum erzeugen eines Spritzgussmateriales mit antibakteriellen Eigenschaften Withdrawn EP1481783A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2003035032 2003-05-31
KR10-2003-0035032A KR100501242B1 (ko) 2003-05-31 2003-05-31 항균 기능을 갖는 사출물 성형 방법

Publications (2)

Publication Number Publication Date
EP1481783A2 true EP1481783A2 (de) 2004-12-01
EP1481783A3 EP1481783A3 (de) 2005-11-23

Family

ID=33129054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03015896A Withdrawn EP1481783A3 (de) 2003-05-31 2003-07-11 Verfahren zum erzeugen eines Spritzgussmateriales mit antibakteriellen Eigenschaften

Country Status (6)

Country Link
US (1) US20040239004A1 (de)
EP (1) EP1481783A3 (de)
JP (1) JP2004358945A (de)
KR (1) KR100501242B1 (de)
CN (1) CN1572819A (de)
MX (1) MXPA03006279A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008038295A1 (de) * 2008-08-18 2010-02-25 Eads Deutschland Gmbh Granulierung und Stabilisierung von Harzsystemen zur Verwendung bei der Herstellung von Faserverbundbauteilen

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100681306B1 (ko) 2005-05-31 2007-02-09 코스모이엔지(주) 은-제올라이트계 및 은나노계 항균제를 함유한 공조 시스템에어 플로우 라인의 제조방법
KR100854730B1 (ko) * 2006-06-12 2008-08-27 주식회사 국일인토트 은 나노 항균 플라스틱 펠렛 및 그 제조방법
KR100847525B1 (ko) * 2007-07-24 2008-07-21 두루산업 주식회사 은나노가 첨가된 가방 손잡이 제조 방법 및 그 가방 손잡이
CN103892522A (zh) * 2012-12-28 2014-07-02 浙江伟星实业发展股份有限公司 服装及抗菌拉链
IT201700001597A1 (it) 2017-01-10 2018-07-10 Viganò Carlo Maria Stefano preparazione semplice ed economica di compositi di poliolefine antibatterici con nano particelle di argento puro

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JPS59133235A (ja) * 1983-01-21 1984-07-31 Kanebo Ltd 殺菌性ポリマー組成物及びその製造法
JPS63265958A (ja) * 1987-04-22 1988-11-02 Shinagawa Nenryo Kk 抗菌性樹脂組成物
DE4133540B4 (de) * 1990-10-12 2004-07-22 Kitagawa Industries Co., Ltd., Nagoya Flexible Folie zum Einhüllen von Nahrungsmitteln sowie Nahrungstransport-Element
JP3078693B2 (ja) * 1993-12-22 2000-08-21 ミサワホーム株式会社 セルロース系微粉粒体及び成形品及び塗料
JPH07238001A (ja) * 1994-02-28 1995-09-12 Matsushita Electric Ind Co Ltd 抗菌性樹脂添加剤および抗菌性樹脂の成型方法
JP2889836B2 (ja) * 1995-03-16 1999-05-10 鐘紡株式会社 変色作用の少ない抗菌性ゼオライト及びその製造法
US6344271B1 (en) * 1998-11-06 2002-02-05 Nanoenergy Corporation Materials and products using nanostructured non-stoichiometric substances
US6652967B2 (en) * 2001-08-08 2003-11-25 Nanoproducts Corporation Nano-dispersed powders and methods for their manufacture
JP2000086775A (ja) * 1998-07-15 2000-03-28 Yutaka Imaizumi 抗菌活性を有する成形品
US20040069454A1 (en) * 1998-11-02 2004-04-15 Bonsignore Patrick V. Composition for enhancing thermal conductivity of a heat transfer medium and method of use thereof
US6187456B1 (en) * 1999-04-09 2001-02-13 Milliken & Company Method of inhibiting color change in a plastic article comprising silver-based antimicrobials
DE19936059A1 (de) * 1999-07-30 2001-02-01 J Peter Guggenbichler Verfahren zur Herstellung von antimikrobiellen Kunststoffkörpern
US6716895B1 (en) * 1999-12-15 2004-04-06 C.R. Bard, Inc. Polymer compositions containing colloids of silver salts
US6379712B1 (en) * 2000-09-13 2002-04-30 Globoasia, L.L.C. Nanosilver-containing antibacterial and antifungal granules and methods for preparing and using the same
US20030151030A1 (en) * 2000-11-22 2003-08-14 Gurin Michael H. Enhanced conductivity nanocomposites and method of use thereof
CN1280166C (zh) * 2001-05-29 2006-10-18 哈巴息脱股份公司 具有夹层结构的模块化传送带的模件及其制造方法
US6641842B2 (en) * 2001-12-12 2003-11-04 Milliken & Company Thermoplastic articles exhibiting high surface-available silver
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008038295A1 (de) * 2008-08-18 2010-02-25 Eads Deutschland Gmbh Granulierung und Stabilisierung von Harzsystemen zur Verwendung bei der Herstellung von Faserverbundbauteilen
DE102008038295B4 (de) * 2008-08-18 2013-11-28 Eads Deutschland Gmbh Granulierung und Stabilisierung von Harzsystemen zur Verwendung bei der Herstellung von Faserverbundbauteilen

Also Published As

Publication number Publication date
MXPA03006279A (es) 2005-04-11
KR100501242B1 (ko) 2005-07-18
EP1481783A3 (de) 2005-11-23
JP2004358945A (ja) 2004-12-24
KR20040103111A (ko) 2004-12-08
US20040239004A1 (en) 2004-12-02
CN1572819A (zh) 2005-02-02

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